As the hot summer sunshine starts to fade and the cooler temperatures of fall starts to settle in, residents of Shamokin and Sunbury start preparing their homes and yards for the wintertime. For many, that leads to the question of whether they need to cover their outside AC for the winter.

While it may seem like a smart idea, the reality is there are many reasons why you shouldn’t cover your AC unit in the winter. On top of not being something you need to do, covering your outdoor air conditioning equipment can actually cause problems.

Here, the specialists at LTS Plumbing & Heating Inc. share five reasons why covering your air conditioner doesn’t need to be on your fall to-do list and what you should do instead.

1. Your AC Unit Isn’t Damaged by Snow

Outside AC units are built to withstand harsh weather conditions like snow in the winter season. These machines are built with sturdy materials and components that can handle the outdoor elements without damage. The coils and fins of the unit are specially developed to resist corrosion, and the housing is designed to protect the internal parts from moisture and debris.

2. Covering Your Air Conditioner Can Cause Mold

One of the reasons you should avoid covering your outdoor air conditioning equipment in the wintertime is because doing so can trap moisture—which is definitely not what you want in your outdoor unit. That’s because trapping moisture inside the unit creates the perfect conditions for mold and mildew to flourish.

Mold and mildew not only have an unpleasant aroma, but they can also create health risks, especially for people with respiratory issues or allergies. Plus, the excess moisture can corrode the internal components of the AC unit.

As an alternative to covering the unit, instead ensure proper drainage and keep the area around the unit clear of debris, allowing for efficient airflow and preventing moisture buildup.

3. Your Covered Air Conditioning Unit Can Attract Animals

You and your family aren’t the only ones who get ready for winter. Animals that live around your home are also hunting for a warm, cozy place to hide out for the cold months. For many creatures, a covered air conditioner is an ideal winter home.

Birds, mice, chipmunks and even rats frequently make winter dens inside covered air conditioners. Animals living in a covered air conditioning unit can cause numerous problems. Rats can chew through wires, insulation and other components, causing damage that may require costly repairs. Debris animals bring into the AC to construct a warm and comfortable home can obstruct airflow and ventilation, decreasing the efficiency of the AC and potentially causing it to overheat. Additionally, animal waste can result in unsanitary conditions and bad odors.

Leaving your air conditioner uncovered helps dissuade wildlife, because an uncovered AC offers less shelter from the elements than a covered unit. That’s better for your air conditioner—and leaves you with less mess to pick up and things to repair once the snow melts.

4. A Winter Cover for AC Units Restricts Airflow

Another reason not to cover your AC unit in the winter is because a cover limits airflow through the unit. Proper airflow is crucial for the AC system because it helps with heat exchange and permits the unit to cool properly. When airflow is reduced, the system has to work harder to achieve the desired temperature, resulting in additional energy consumption and strain on the components.

In addition, if you use your air conditioner without realizing that the exterior unit is covered or because you simply forgot, it could result in a range of problems. One issue is that the shortage of proper airflow could cause the compressor to overheat, causing its failure or damage.  That’s why it is crucial to ensure the outdoor unit is free from barriers and is not covered to maintain the best possible airflow.

5. AC Maintenance Offers More Benefits Than Covering Your Air Conditioner

The bottom line is, it’s a whole lot more effective to do a little maintenance for your cooling system than to cover your outdoor AC unit.

There are a number of key maintenance tasks you should prioritize to ensure maximum function and longevity of your AC unit. First, it’s wise to look at your outdoor AC unit regularly and remove any debris such as leaves, sticks and dirt to promote proper airflow. Second, check and clean the coils, fins and filters to make sure you don’t see any dirt and dust buildup that would prevent successful heat exchange or airflow.

Scheduled air conditioning maintenance not only improves efficiency, but it also helps extend the unit’s life span, decreases energy consumption and avoids costly repairs. Rather than using a cover, committing time and effort into routine air conditioning maintenance is a proactive plan of action that can greatly benefit your entire HVAC system in the long run.